EP3264400A1 - Dispositif d'affichage et plaque arrière utilisée dans ledit dispositif d'affichage - Google Patents

Dispositif d'affichage et plaque arrière utilisée dans ledit dispositif d'affichage Download PDF

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Publication number
EP3264400A1
EP3264400A1 EP16754969.0A EP16754969A EP3264400A1 EP 3264400 A1 EP3264400 A1 EP 3264400A1 EP 16754969 A EP16754969 A EP 16754969A EP 3264400 A1 EP3264400 A1 EP 3264400A1
Authority
EP
European Patent Office
Prior art keywords
back plate
bulging
display device
sections
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16754969.0A
Other languages
German (de)
English (en)
Other versions
EP3264400B1 (fr
EP3264400A4 (fr
Inventor
Hiroya Tanaka
Satoshi Kawaguchi
Takayuki Michiyasu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
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Publication date
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Publication of EP3264400A1 publication Critical patent/EP3264400A1/fr
Publication of EP3264400A4 publication Critical patent/EP3264400A4/fr
Application granted granted Critical
Publication of EP3264400B1 publication Critical patent/EP3264400B1/fr
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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133325—Assembling processes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers

Definitions

  • the present disclosure relates to a display device that displays an image such as a still image or a moving image, and a back plate used in the display device.
  • Patent Literature 1 discloses a display device provided with a stand.
  • the stand supports the display device from bottom.
  • the stand has a plate-shaped pedestal, and a supporting column extending upward from the pedestal, for example.
  • An upper end part of the supporting column is fastened, with a screw or the like, to a back plate that holds a display panel on the back surface of the display panel.
  • Display devices are getting larger. Also, a size of a mounting section for mounting a holding member such as a supporting column has tended to increase in order to suppress an inclination of the display device in the front-rear direction, vibration in a width direction, and the like. On the other hand, when the entire thickness of the display device increases due to the increase in size of the mounting section, it is difficult to make the display device thinner.
  • the present disclosure provides a display device that can be held by a holding member in a stable state while design of the display device is being improved, and a back plate used in the display device.
  • the display device includes a display panel that displays an image and a back plate that holds the display panel.
  • the back plate has mounting sections, a plurality of vertically bulging sections, and a laterally bulging section.
  • the mounting sections are disposed on a plurality of positions on an edge part of one end of the back plate, and holding members that hold the display device are mounted to the mounting sections respectively.
  • the vertically bulging sections bulge out from a reference surface of the back plate, and extend from near one ends of the mounting sections to an edge part of the other end of the back plate on an opposite side from the one end of the back plate.
  • the laterally bulging section bulges out from the reference surface, extends along an edge of the other end of the back plate, and has a length larger than a distance between the vertically bulging sections adjacent to each other.
  • the display device of the present disclosure can be held by the holding member in a stable state while increase in thickness is suppressed, even if the display device has a large size.
  • Exemplary embodiments below merely describe one example of a display device according to the present disclosure. Therefore, the present disclosure is not limited only to the exemplary embodiments described below.
  • FIG. 1 is a perspective view schematically illustrating one example of an external appearance of display device 100 according to the first exemplary embodiment.
  • FIG. 2 is an exploded perspective view schematically illustrating one example of a structure of display device 100 according to the first exemplary embodiment.
  • XYZ axes are used below for the description as necessary.
  • a direction parallel (substantially parallel) to a longer side direction of display device 100 is defined as an X axis direction
  • a direction parallel (substantially parallel) to a shorter side direction of display device 100 is defined as an Y axis direction
  • a direction orthogonal to both the X axis and the Y axis is defined as a Z axis direction, for the sake of convenience.
  • the vertical direction with respect to the XZ plane that is, the Y-axis direction, is the direction of gravitational force.
  • display device 100 Under a normal use condition, display device 100 is supposed to be installed on an installation surface parallel (substantially parallel) to the XZ plane. Further, a side of display device 100 that faces a user (not illustrated) viewing display device 100 is defined as a "front side” or a “front”, and a side opposite to the front side is defined as a “back side” or a “back”. A side relatively distant from the installation surface in the Y-axis direction is defined as “upper (or top) side”, and a side relatively close to the installation surface in the Y-axis direction is defined as “lower (or bottom) side”.
  • a direction parallel (substantially parallel) to the shorter side direction of display device 100 is defined as “vertical”
  • a direction parallel (substantially parallel) to the longer side direction of display device 100 is defined as “widthwise (or lateral)”. Note that these directions are given as relative directions for descriptive purpose but not absolute ones.
  • Display device 100 includes frame 101, front member 102, display panel 103, light-emitting unit 140, back plate 108, and back cover 109.
  • Display device 100 described in this exemplary embodiment is a television that outputs images or sounds obtained from received broadcast waves, etc., and contains a circuit board (not illustrated). Noted that the configuration as a television is substantially identical to a commonly known configuration, so that the description thereof will be omitted.
  • display device 100 is mounted to holding members 200.
  • Holding member 200 encompasses members called a leg or a base (pedestal, stand), a bracket for mounting display device 100 to a wall or a ceiling, and the like.
  • Frame 101, front member 102, and back cover 109 are components that cover display panel 103, light-emitting unit 140, and the like.
  • Frame 101 is a member that protects outer perimeters of display panel 103, and the like.
  • Front member 102 is a transparent member that covers a front surface of display panel 103.
  • Back cover 109 is a member that protects back surfaces of display panel 103 and the like.
  • Display panel 103 is a device that displays an image based on an input video signal.
  • the image includes a still image, a moving image, and the like, and also includes characters, symbols, and the like.
  • Display panel 103 described in this exemplary embodiment is a liquid crystal display panel.
  • a thickness of display panel 103 is about 1 mm to 3 mm, for example. Note that the type of display panel 103 is not particularly limited in the present disclosure.
  • Display panel 103 may include a display panel that does not need light-emitting unit 140 on the back surface side of display panel 103.
  • Light-emitting unit 140 is a component for radiating light with substantially uniform luminance to the back surface of display panel 103, and generally called a "backlight".
  • Light-emitting unit 140 includes diffusion plate 104, reflection sheet 105, and light-emitting module 106.
  • Light-emitting module 106 is configured such that several of a plurality of light-emitting sources 161 included in display device 100 are mounted to wiring board 162. Light-emitting module 106 is provided so that light-emitting sources 161 can be easily disposed on back plate 108. Light-emitting sources 161 can be arranged in a matrix along display panel 103 by mounting light-emitting module 106 to back plate 108.
  • a recessed part (not illustrated) for mounting light-emitting module 106 is formed on back plate 108.
  • Wiring board 162 is provided with a connector. On wiring board 162, electric power supplied from an electric line connected to the connector is supplied to light-emitting sources 161 mounted to wiring board 162. Thus, light-emitting sources 161 mounted on wiring board 162 are turned on.
  • Light-emitting sources 161 are arranged in a matrix along display panel 103 (along the X axis and the Y axis). Light-emitting sources 161 are components that radiate light toward display panel 103 from the back surface side of display panel 103. Although the type of light-emitting sources 161 is not particularly limited in the present disclosure, examples of light-emitting sources 161 include a white LED which is formed by combining a blue light-emitting diode and a fluorescence material emitting yellow and can radiate white light.
  • Diffusion plate 104 is a member that diffuses light radiated from the plurality of light-emitting sources 161.
  • diffusion plate 104 diffuses incident light in substantially all directions to reduce viewing angle dependency in luminance of radiated light, thereby making the luminance of the radiated light substantially uniform.
  • diffusion plate 104 is a plate-shaped transparent member having fine irregularities on both surfaces or only on one surface.
  • microparticles having high reflectivity may be dispersed in diffusion plate 104.
  • diffusion plate 104 may be formed by laminating a plurality of films with fine irregularities in layers.
  • Reflection sheet 105 is a member that reflects light radiated from light-emitting sources 161 to display panel 103.
  • Reflection sheet 105 is provided with insertion holes into which light-emitting sources 161 are inserted. Note that the diameter of each insertion hole may be set to be larger than the outer shape of each of light-emitting sources 161 so that light-emitting source 161 can be easily inserted into the insertion hole.
  • reflection sheet 105 is not particularly limited.
  • a white sheet-shaped member made of synthetic resin such as polyethylene terephthalate (PET) having excellent light reflectivity can be used as reflection sheet 105.
  • reflection sheet 105 has flexibility (elasticity) that enables swelling-out (deformation) due to partial pushing-out by protrusion (not illustrated).
  • FIG. 3 is a perspective view schematically illustrating one example of a back part of back plate 108 according to the first exemplary embodiment.
  • Back plate 108 is a plate-shaped member that holds display panel 103, and is disposed on the back surface (a surface in the negative direction of the Z axis) of display panel 103 as illustrated in FIG. 2 .
  • back plate 108 has mounting sections 181, vertically bulging sections 182, and laterally bulging section 183.
  • back plate 108 is also provided with a bulging section (recessed section) for holding light-emitting module 106, bosses for fastening light-emitting module 106 and a circuit board with screws, but they are not illustrated.
  • FIG. 4 is an enlarged plan view illustrating the vicinity of mounting section 181 in the first exemplary embodiment.
  • FIG. 5 is an enlarged perspective view illustrating the vicinity of mounting section 181 to which holding member 200 is mounted in the first exemplary embodiment.
  • Mounting sections 181 are formed on an edge part of a lower end of back plate 108, and are a portion of back plate 108. Each mounting section 181 is formed such that holding member 200 for holding display device 100 can be mounted to thereto.
  • mounting sections 181 may be disposed on positions where holding members 200 can hold back plate 108 in a balanced and stable manner.
  • the above-mentioned edge part of the lower end of back plate 108 means a range where each holding member 200 mounted to each of mounting sections 181 can hold back plate 108 in a balanced and stable manner.
  • attachment fitting 189 for mounting holding member 200 is fixed to mounting sections 181 respectively.
  • Attachment fitting 189 is a member that can improve the structural strength of mounting section 181 and can facilitate and ensure the mounting of holding member 200 to back plate 108.
  • each of vertically bulging sections 182 is a portion of back plate 108, and is configured to have a width (a length in the longer side direction (the X-axis direction) of back plate 108) larger than the width of mounting section 181, bulge out backward from reference surface 184, and extend from the vicinity of upper end part 181a of mounting section 181 to an edge part of an upper end of back plate 108.
  • reference surface 184 means a surface, on the back surface of back plate 108, which is flush with mounting sections 181 to each of which holding member 200 is mounted.
  • the lower end and the upper end of vertically bulging section 182 may be set within a range by which sufficient rigidity of back plate 108 can be obtained.
  • the vicinity of upper end part 181a of mounting section 181 means a region from a position where the lower end of vertically bulging section 182 is in contact with upper end part 181a of mounting section 181 to a position where the lower end of vertically bulging section 182 is apart from upper end part 181a of mounting section 181 by a distance by which the rigidity of back plate 108 is not impaired.
  • the edge part of the upper end of back plate 108 means a region where sufficient rigidity of back plate 108 can be obtained by vertically bulging sections 182.
  • the bulging section (including vertically bulging sections 182 and laterally bulging section 183) means a part formed such that a portion of a thin plate-shaped member bulges out and projects to one side. Therefore, the bulging section projects as viewed from one surface of the plate-shaped member (as viewed from the back surface side of back plate 108 in the example in FIG. 3 ), while it is recessed as viewed from the other surface (as viewed from the front surface side of back plate 108 in the example in FIG. 3 ).
  • mounting sections 181 and vertically bulging sections 182 are provided to positions on back plate 108 for dividing back plate 108 into substantially three equal parts or almost three equal parts in the widthwise (lateral) direction (the longer side direction (the X-axis direction) of back plate 108), as illustrated in FIG. 3 .
  • holding members 200 can hold back plate 108 in a balanced manner with the number of mounting sections 181 and vertically bulging sections 182 formed on back plate 108 being reduced.
  • vertically bulging sections 182 are not disposed on edge parts of ends in the widthwise (lateral) direction (the longer side direction (the X-axis direction) of back plate 108) of back plate 108.
  • This configuration can give, to a user, the impression of the thinness of display device 100 as viewed from a side of display device 100, and thus design of display device 100 can be improved
  • vertically bulging sections 182 extend along a top-bottom direction (the shorter side direction (Y-axis direction) of back plate 108) of back plate 108.
  • the rigidity of display device 100 in the front-back direction (the thickness direction (Z-axis direction) of back plate 108) can be improved.
  • a part of vertically bulging section 182 in the top-bottom direction may be narrower than mounting section 181 to ensure a region where a circuit board and the like are disposed.
  • at least a part of vertically bulging section 182 may be wider than mounting section 181.
  • back plate 108 has reinforcement bulging sections 185 as illustrated in FIG. 4 .
  • Each of reinforcement bulging sections 185 is provided on a side of mounting section 181 and extends from the lower end of vertically bulging section 182 to substantially an intermediate position of mounting section 181 beyond upper end part 181a of mounting section 181.
  • reinforcement bulging sections 185 are formed to bulge out backward from reference surface 184. Due to the configuration in which each reinforcement bulging section 185 is disposed on a side of each of mounting sections 181, the mechanical strength on mounting sections 181, in the front-back direction (the Z-axis direction), can be increased in the state in which each holding member 200 is mounted to each of mounting sections 181.
  • each reinforcement bulging section 185 is formed continuously with each of vertically bulging sections 182 in the top-bottom direction (the Y-axis direction).
  • reinforcement bulging section 185 has an inclined section 186 of which bulging height is gradually decreased toward the bottom (in the negative direction of the Y axis) from the bulging surface of vertically bulging section 182.
  • the bulging height means a length from reference surface 184 to the bulging surface in the front-back direction (the Z-axis direction) of back plate 108.
  • inclination angle of inclined section 186 is set to be less steep than an inclination angle of tapered section 187 of vertically bulging section 182.
  • a width (the length in the X-axis direction) of reinforcement bulging section 185 is set to be a width as substantially same as a width obtained by subtracting the width of mounting section 181 (the length in the X-axis direction) from the width of vertically bulging section 182 (the length in the X-axis direction).
  • This configuration enables the manufacture of reinforcement bulging sections 185 to be facilitated with the mechanical strength on mounting sections 181 being sufficiently ensured.
  • the provision of inclined section 186 can improve the design at the lower end part of display device 100.
  • laterally bulging section 183 is a portion of back plate 108 that extends along an edge of the upper end (in the X-axis direction) of back plate 108 and is formed into a shape bulging out backward from reference surface 184.
  • the length (a size in the X-axis direction) of laterally bulging section 183 is set to be longer than the distance between vertically bulging sections 182 provided on two positions of back plate 108 in the X-axis direction.
  • laterally bulging section 183 extends throughout almost the entire lateral width (the width of back plate 108 in the longer side direction (the X-axis direction)) of rectangular reference surface 184, and is formed continuously with vertically bulging sections 182. That is, laterally bulging section 183 and vertically bulging sections 182 are connected to each other into a T shape at ends of vertically bulging sections 182.
  • the bulging height of laterally bulging section 183 (the length from reference surface 184 to the bulging surface in the Z-axis direction) is set to be almost equal to the bulging height of vertically bulging sections 182 so that the bulging surface of laterally bulging section 183 is substantially flush with the bulging surfaces of vertically bulging sections 182.
  • the width of laterally bulging section 183 (the size in the Y-axis direction) is set to be narrower than the width (the size in the X-axis direction) of vertically bulging sections 182.
  • the structural strength due to vertically bulging sections 182 can be extended to the edge parts of ends of back plate 108 in the widthwise (lateral) direction (the X-axis direction), so that the strength in the rotation direction of display device 100 around the top-bottom direction (the strength with respect to deflection in the Z-axis direction) can be increased.
  • laterally bulging section 183 is formed across reference surface 184 from near an intermediate position of inclined frame section 188 disposed on the peripheral edge of back plate 108.
  • inclined frame section 188 is a portion of back plate 108 and is configured to be closer to display panel 103 toward the peripheral end edge of back plate 108.
  • inclined frame section 188 is a portion of back plate 108 and is configured such that an opening area becomes larger according as inclined frame section 188 is near to display panel 103.
  • This configuration enables the rigidity of back plate 108 to be increased.
  • vertically bulging sections 182, laterally bulging section 183, and reinforcement bulging sections 185 are formed integrally with back plate 108, and formed simultaneously with back plate 108 during the manufacture of back plate 108 by performing plastic deformation working on a metal plate.
  • a metal plate is subjected to press working using a die so that vertically bulging sections 182, laterally bulging section 183, reinforcement bulging sections 185, inclined frame section 188, etc. can be formed.
  • back plate 108 has also bulging sections (not illustrated) other than vertically bulging sections 182 and laterally bulging section 183.
  • vertically bulging sections 182 and laterally bulging section 183 are formed to have a bulging height larger than a height of other bulging sections.
  • the display device includes a display panel that displays an image and a back plate that holds the display panel.
  • the back plate has mounting sections, a plurality of vertically bulging sections, and a laterally bulging section.
  • the mounting sections are disposed on a plurality of positions on an edge part of one end of the back plate, and holding members that hold the display device are mounted to the mounting sections respectively.
  • the vertically bulging sections bulge out from a reference surface of the back plate, and extend from near one ends of the mounting sections to an edge part of the other end of the back plate on an opposite side from the one end of the back plate.
  • the laterally bulging section bulges out from the reference surface, extends along an edge of the other end of the back plate, and has a length larger than a distance between the vertically bulging sections adjacent to each other.
  • display device 100 is one example of the display device.
  • Display panel 103 is one example of the display panel.
  • Back plate 108 is one example of the back plate.
  • Mounting section 181 is one example of the mounting section.
  • Vertically bulging section 182 is one example of the vertically bulging section.
  • Laterally bulging section 183 is one example of the laterally bulging section.
  • Holding member 200 is one example of the holding member.
  • the lower end of back plate 108 is one example of one end of the back plate.
  • the upper end of back plate 108 is one example of the other end of the back plate.
  • Reference surface 184 is one example of the reference surface of the back plate.
  • Upper end part 181a of mounting section 181 is one example of one end of the mounting section.
  • design can be improved by decreasing the thickness of display device 100.
  • the entire rigidity of a display device set in which holding members 200 are mounted to display device 100 can be increased.
  • the mechanical strength for obtaining high rigidity can be implemented by the structure of vertically bulging sections 182 and laterally bulging section 183 provided to back plate 108. Accordingly, the production, installation, etc. of display device 100 can be facilitated, the deformation of display device 100 and the like can be suppressed.
  • each of the vertically bulging sections may have a width larger than a width of each of the mounting sections.
  • the back plate may have reinforcement bulging sections each of which is provided on a side of each of the mounting sections and extends from one end of the vertically bulging section to position beyond the one end of the mounting section.
  • the length of vertically bulging section 182 in the X-axis direction is one example of the width of the vertically bulging section.
  • Reinforcement bulging section 185 is one example of the reinforcement bulging section.
  • the lower end of vertically bulging section 182 is one example of one end of the vertically bulging section.
  • Substantially the intermediate position of mounting section 181 is one example of the position beyond the one end of the mounting section.
  • rigidity in display device 100 described exemplary in the first exemplary embodiment, rigidity can be increased.
  • the mechanical strength on mounting sections 181, in the front-back direction (the Z-axis direction) can be increased in the state in which each holding member 200 is mounted to each of mounting sections 181.
  • each of the reinforcement bulging sections may have an inclined section which has a bulging height gradually decreasing toward the one end of the back plate.
  • inclined section 186 is one example of the inclined section.
  • the length from reference surface 184 to the bulging surface in the front-back direction (the Z-axis direction) of back plate 108 is one example of the bulging height.
  • design on the lower end part of display device 100 can be improved with the mechanical strength on mounting sections 181 being ensured.
  • the first exemplary embodiment has been described as an example of the technique disclosed in the present application.
  • the technique in the present disclosure is not limited to the above description, and is applicable to embodiments to which modification, replacement, addition, omission, or the like is made.
  • the constituent elements described in the first exemplary embodiment can be combined to form a new embodiment.
  • the first exemplary embodiment describes display device 100 including a liquid crystal display panel and a direct backlight.
  • display device 100 may include an organic electroluminescence (EL) display panel or other display panels.
  • EL organic electroluminescence
  • the first exemplary embodiment has described the configuration example in which vertically bulging section 182 has a width larger than a width of mounting section 181.
  • the present disclosure is not limited to this configuration.
  • Vertically bulging section 182 may have a width smaller than a width of mounting section 181.
  • the first exemplary embodiment has described the configuration in which a plurality of light-emitting sources 161 is mounted to wiring board 162 as light-emitting module 106.
  • wiring board 162 may be configured by a flexible printed circuit (FPC), and wiring board 162 that contains electric lines for supplying electric power to wiring board 162 may be configured by an FPC. If various boards and wiring lines are formed by an FPC, routing of wiring lines becomes easy, so that reflection sheet 105 provided to back plate 108 can be flatly attached.
  • FPC flexible printed circuit
  • the first exemplary embodiment has described the configuration example in which the bulging height of vertically bulging sections 182 and laterally bulging section 183 is set larger than the bulging height of other bulging sections (not illustrated).
  • Display device 100 may have a bulging section with a bulging height larger than the height of vertically bulging sections 182 and laterally bulging section 183.
  • the first exemplary embodiment has described the configuration example in which reinforcement bulging section 185 is provided on one side of mounting section 181.
  • Reinforcement bulging section 185 may be provided on both sides of mounting section 181.
  • laterally bulging section 183 and vertically bulging sections 182 are connected to each other into a T shape at the ends of vertically bulging sections 182.
  • the present disclosure is not limited to this configuration.
  • laterally bulging section 183 and vertically bulging sections 182 may intersect each other in a "+" shape (or in an "X" shape) at the intermediate portion of laterally bulging section 183 and the intermediate portions of vertically bulging sections 182.
  • the first exemplary embodiment has described the configuration example in which back plate 108 has two vertically bulging sections 182 and one laterally bulging section 183.
  • Back plate 108 may have three or more vertically bulging sections 182, or two or more laterally bulging sections 183.
  • the components in the accompanying drawings and the detail description may include not only components essential for solving problems, but also components that are provided to illustrate the above described technique and are not essential for solving problems. Therefore, such inessential components should not be readily construed as being essential based on the fact that such inessential components are shown in the accompanying drawings or described in the detailed description.
  • the present disclosure is applicable to a display device that displays images, characters, moving images, and the like. Specifically, the present disclosure is applicable to a display device, held by a holding member, for a television, monitor display, digital signage, mobile terminal, tablet terminal, or table-type display device.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
EP16754969.0A 2015-02-23 2016-02-19 Plaque arrière utilisable dans un dispositif d'affichage et dispositif d'affichage comprenant une telle plaque arrière Active EP3264400B1 (fr)

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JP2015033043 2015-02-23
PCT/JP2016/000886 WO2016136218A1 (fr) 2015-02-23 2016-02-19 Dispositif d'affichage et plaque arrière utilisée dans ledit dispositif d'affichage

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EP3264400A1 true EP3264400A1 (fr) 2018-01-03
EP3264400A4 EP3264400A4 (fr) 2018-03-28
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EP (1) EP3264400B1 (fr)
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EP3264400B1 (fr) 2020-05-20
JP6557869B2 (ja) 2019-08-14
US20170357124A1 (en) 2017-12-14
WO2016136218A1 (fr) 2016-09-01
EP3264400A4 (fr) 2018-03-28

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